during Thursday evening more then 50 ships were stuck in the ice. Some of these ships are passenger ferries enroute from Sweden to Finland or Ă…land. Eventually one of the passenger ferries, Viking Line's Isabella managed to free herself and headed back to Stockholm.
The passenger ferries are built to meet the requirements of at last ice class 1A which is the second highest ice class.
Unfortunately due to many mild winters, the strongest Swedish icebreaker Oden are on a polar expedition to Antarctica.